Cable stripping device



Feb. 10, 1948. c. A. TILESTON CABLE STRIPPING DEVICE Filed July25, 1945 4 Sheets-Sheet 1 IN1 'E.\"TOR.

AGEN 'Il Feb. l0, 1.948. Q A TlLsTON 2,435,660

CABLE STRQIPPINGA DEVICE Filed July 23,11945 4 Sheets-Sheet 2 I N VEN TUR. rwc'e xa AGENT.

Feb. 10, 1948.

c. A. TILESTON CABLE sTRIPPlNG DEVICE Filed July 25, 1945 4 Sheets-Sheet 3 c. A. TILEsToN CABLE STRIPPING DEVICE 'Filed July 23, 1945.

4 Sheets-Sheet 4 IN VEN TOR. ZfezzcPJZ/s BY g1 a AGENT.

Feb. 10,1948.

EPatented Feb. l0, 194g s CABLE STRIPPING DEVICE Clarence A. Tleston, Glen Rock, N. J., assignor to Federal Telephone andRadio Corporation, New York, N.V Y., a corporation of Delaware t Y Application July 23, 1945, Serial No. 606,691` l Claims. l

This invention relates to a cable stripping device and particularly to a device capable of stripA ping oi insulating material, metal braid or any other layer arranged aroundthe conductor of a cable. y

It is desirable to save the material of cables, for example of high frequency cables, which do not show the desired characteristics and in order to enable the re-use of each one of the materials used'in the manufacturing process 0f cables, it is preferable to strip off each layer of the usedmaterials separately. v

It is. therefore, the main object of the present invention to provide means for stripping off different layers of a cable by providing guiding means for the cable behind a knife member and further means for separately removing the cable core and the layers stripped olf the cable.

It is another object of the present invention to provide two pairs of wheels of predetermined prole chosen in accordance with the crosssections of the cable to be stripped offfone pair serving as a guide member for the cable and the other pair as a guide member for the layer which has been stripped off.

It is still a further object of the present invention to provide three wheels of predetermined profile in accommodation to the cross sections of the cable to be stripped off, one wheel cooperating with each of the other wheels in guiding the cable and the layers stripped off the cable, respectively.

It is still another object of the present invention to provide means for adjustably spacing the pair of wheels which serves the purpose of removing the layer stripped off the cable.

With these and other objects in View the present invention will become apparent and clearly understood in the following specification in connection with the accompanying drawings, in which: l,

Figure 1 is an elevational front view of the cable stripping device;

Fig. 2 Vis a plan view of the device shown in Fig. 1;

Fig. 3 is a right end in Fig. 1;

Fig. 4 discloses the means View of the device shown for adjustably spacing two cooperating wheels, guiding the layerV stripped off the cables; and

Fig. 5 is a cross section throughV the device along the lines 5-5 of Fig. 1.

Referring now to the drawings, the device consists of a base frame I on which two side frames 2.

are properly mounted. The side frames 2 are equipped with bearings 3 for a shaft 4 which car# ries a wheel 5. The wheel 5 is equipped with av number of different'proiiles 6 in order to usethe same wheel 5 for cables of different cross sec; tion.` One end of 'the shaft 4 carries a tooth gear 1 and a sprocket wheel 8 is fastened to an extension of the shaft 4 which sprocket wheel 8 is Vdriven by a sprocket chain 9 by any known driving means.

Both side framesl 2 Aare equipped with a vertical slot Ill which slots are adapted to receive a bearing I I slidable in the slots IIl in vertical direction. Springs I2 which are adjustable by threaded bolts I3 are arranged on top of the bearings Il, which springs `l2 tend to press the bearings II into their lowest position. -The threadedv bolts I3 are inserted in cross'bars I4 fastened to the Atop of the side frames 2. The bearings I I are adapted to carry a. shaft -I5 on which another wheel I-B- is mounted, which wheel I6 is also profiled for cables of different cross sections in such a way that the profiles of the wheels 5 and I6 together form an open space of about the different cross sections of 2the cables. One end of the shaft yI5 carries a tooth gear I1 which is normally in mesh with the tooth gear 1 of thewheel 5. Theteeth of the gears I and I1 are of such a height that the two gears '1 and I1 remain in mesh even if gear Il is lifted somewhat together with the wheel I6 against pressure of the spring l2, which lifting might occur when an irregular thicker part of the Acable runs through the space between the wheels 5 and I6.

As seen in Fig. 3, the side frames 2, which are i shown in the approximate shape of a right angle are equipped with another slot I8, in the horizontally extending position. The slots I8 arev adapted to receive bearings I9 carrying a shaft 20 on which a third wheel 2| is mounted which also is profiled either somewhat like the wheels 5 and I6, or may be of cylindrical shape throughout its entire length, since even when profiled the cylindrical outer faces 5' and 2l', respectively, of the wheels 5 and 2| serve asV rotating clamping means for removal of the stripped olf layer of the cable. In order to improve the grip of the cylindrical faces 5 and 2l on the stripped layer, they are preferably provided with a roughened surfaceandthe wheels 5 and ZI preferably turn with somewhat different speed in order to achieve proper stress in the stripped oli material. The positionv of the three wheels 5, I5 and 2l is chosen in such a way that conforming proles of the different wheels fare arranged oppo-` bearing I9 at the bottom of the slot I8 by means of a threaded bolt 23 screwed again into scross bars 24 which close up the slot I8 and are mounted on the end of the side frames 2.

A knife or blade 25, is arranged in front of the 5 wheel I6 just above the open space formed by the wheels 5 and I6. The same number of blades are provided as profiles.: are arranged ion the wheels 5:'and-:I61 'The blades are carried byisne. cial partly bent holders 2'6 which slide in ver- 10 tical direction in a slot 26'. A spring 21 pressing.-

against the top of the holders 26 teridgtillieti).J the holders 26 and thereby the blades '25"in their" lowest position through an aada'ustlablke Yabutment in the form of a threaded .bo lt 2 Yliicla .15 serted into an angular member ZSLvattached-fito.- the side frame 2. A number oigupper. f ryont. plates 30 which are screwed to but spaced'frornI an extension 30 of the side frames 2 form-.the i slot 26 for guiding theholders 26 to allow the 20 inditiduel .insertieri` er-ediilstmeei eeeh. epe. of. thebledeheldersl, 'Ih IQW eend ef ealicn Qif theirOHt-pletes :30.12% ui .1.1. elifomie/ withy eaeh ene-ef. lthe preiiles ff-teeewiieelsf Whereesfeeeh front-plete@feevers ene .0f the 2s blade holders .2*6s0ithaifei1 plates ieeeielr eoyef i #defend-redenenweetle tries.; lie.' single inwer.- -eever pletefeI--enly sprendedgwhen covers entirely the lower wheel 5. l111e@lo'wer: eereefplete 3i .is equipped :with @preterebli illzee sa extensionsezfdireeiedreward-enel@ heel 5 which.A extensieps 3,2. rest. .en e, sheft indented inthefsideefremee- 'Ehe preferably en;A tieree-r. .1eees. n. e web: helene the three, extepsiens 3?. i ef. the@ .e ve plate-3 I- ediiippedfwiihrfais- .Sprnesf Y each :oi whi.el.1.-i.s.-eiieehed 1i6..meupted in .extension 3.1 ef; 2.: .whereesits other end.- isfetieeh lesmeur-itedineei? ihefuppee eri .i -.-vr tend te V:keep the leiter@ eaves platee! I in buiment position between the e en ens i2A and. tnesheft 33t The tep eff. ee.. espletare.' 'is' alsoA equipped: wither-edles .e espend-ine; 1i the profi-les provided atthe lo i upper @over plates-.31t- Qlieeepe 1.2i,- tlie .i` :marries e handle Serene.- pr teenies-thawed 33.90? from its normal lposition byme nspfgha' f dief38,y in which the Hats dear iny'vertifcaiposxf. tienv te e posities in whieh .the re-@tepsfrefefiv su. into horizontal position, vthe ,eigtensionp r3:2: will. be, lewereddewn te the :fiets Seeley, needs... Offiil? springs 35, thereby lowering; the.; entire"coverI Diete-3L By thesemeepsihe speee between die upper and lower eevei-V etes-ieee@ eieomef 5s whatin order to enable beweerden-ei eeeble. into .the spese between.. ihe lewe? endupper. whee1s5 and-16, to adjustproperiyan inserted sable, er to .assist in remevpeemeieriel which mayfheve jammed: The. eeie-inelhigher p0sition of the lower -coverplatea/3'I canbeeasily reached again by turning: theA handleg. fpr 90"v back te its previousr esitiiepai1ie@byy raisins. seein r the @overY plete A 3l .against eenen. er; the springs 3.5. 65 As shown in Figseaiidffi, speeialameepsgerei provided forV separating the twg.. leweif wheels 5.a n d- .2| :when the-stripoflayeris tii irst time; inserted betweenthe whee1s... As te dbefplie. the side frames. are equippedwithn .lateral slet:l 7c. I8 inwhichthe bearing.,` I S-can Inps/ge, against1 pressure 0f the springy 2.2;; 1n-erderfi=ee-ehiee thislend, another shaft 391 is...n.1eup.t dein .the sisietframes v2 which sheitfeair es .1p ferelely.- me arms :4.0 abuttinsfesainst. ilieebeerinss d 7l the' niet.. I l' 49;

4 link 4I keyed on the shaft 39 is connected with a bifurcated end piece 42 of a bar 43 which, by example can lead to a foot pedal 44. schematically shown in Fig. 3. It can be seen that by pulling the bar 43 the arms 40 will press the bearings I9 in the slot I8 against pressure of the spring 2'2 into the position shown in Fig. 4, therebyrgmloving away the shaft 20and also the wheel I 6,/.from the 'other..wheel 5, in', whichlfposition the layer stripped oi the cable can be inserted between the wheels 5 and I6 and upon release of the, foot pedal 44 the spring 22 will return immediately the wheel I6 into contact with wheel 5.

Whilelhavepdisclosed the principles of my invention. in connection with a single embodiguide. fortheileyer stripped pifntiielfeeble, en., knife `vmember.mountedin;:frenes-.tbe .seidarsiif pair of said Wheels and adapted-io/ijkspn i later er theeabletebe stripped. 0.1L.'

rali y ef' profi-les` en- 1 eeen one of the Wheel theseiel `fst peiir,A the seid. preieseef the-i edieeeet-wheels forming ep1iire1iix-eidiffeee Open spaees. eeeerdipe i0; the veryineere.s tiprialsizeI o f.. cablelayers.

e.- In. e. device, asset-ferte 1.11..,e1ai1pf1. asie@` relityfef substantially.cylindiiel ieees. en' j; one-of. thehwheels ofthe saidseond pair, sah; feeesfeeiee errefised eppesite. .eeen.einer'eii-.lti1e-I respectiveywheels and betweenv tu adjacent liles for cables of diierent cross se't n n third-wheel, said cylindrical .f tof 'erve as rotating clamping me leyer- 4,l In a device,' asset forthin iclaizri 1 means fpaseparating tne'whee1s-pftnsaid 'sec of: eelsin order to insert a'laye1: strip the'cable between the'said wheels.A 5. In a device for strippinga.ca b1 e,v a frame comprising. twoparallel'extending.,wall'l wneeljrqtatamymoumed between@ in said `Wall directedtdwardgthecen rl wheel.. two. ademend whee1s..m 'ne totheii'rst wheelin said slotso N i members in said slots pressingfsaidf v tiene wheels edward eisers# mensen@ the latter with each one ofthe said. addihti wheels forming two pairs .I of wheelslher said pairs being adapted asaguidejcrlth i9. be. stripped epd .the seeded-Qi.. the being adapted as a guide for the layer strippegijA ed. the cable, akmfe members; .frees ef..s.e'id iirst pair of wheels adapted to split at least-"che 1eer0fseid-eeble e spripemeipber.pressipezseid knife membeitinto its .dep/.n .pesitienaseinst the.: cable to be stripped, .and means f0.1: seper. int'. thewheels Of seid seeond-.ipairinordepte insert the stripped off layer -between'said yvliep1- .6-.In a-hdevicevas, set-forth .in claiin; a plurality-0i preles.- in eaehef .tneewheels rfsaidf; -rst .pair inonder. to .receive .cables Qifd1ierent;

cross sections inthe respective open spaces of the said first pair of wheels.

'1. In a device, as set forth in claim 5, a plurality of substantially cylindrical faces in each of the wheels oit the said second-pair, said faces being arranged between two adjacent proles of diierent cross sections on the said third wheel, and said faces 'being adapted to serve as rotating clamping means f or a stripped off layer.

8. In a device as set forth in claim 5, a plurality of upper cover plates and at least one lower cover plate, the lower margin of said upper plates and the upper margin of said lower plate forming together a` plurality of diierent profiles in accordance with cables of different cross section, said cover plates being mounted in front of and adjacent to said first pair of plates.

9. In a device as set forth in claim 5, a plurality of upper cover plates and at least one lower cover plate, the `lower margin of said upper plates` and the upper margin of said lower plate forming together afplurality of diiferent profiles in accordance with cables of diierent cross sections, said cover plates being mounted in front of and adjacent to said first pair of wheels, and means for separating said plates.

10. In a device, as set forth in claim 5, a plurality of uppercover plates and at least one lower cover plate, thelower margin o! said upper plate and the upper margin of said lower plate forming together a plurality of different profiles in accordance with cables of different cross sections, said cover plates being mounted in front of and adjacent "to said iirst pair of wheels, at least one extension on said lower plate, a shaft supporting said extensions mounted in said walls, at least one flat on said shaft arranged beneath said extension of the lower plate, springs pressing said extensionsv against said shaft, said flat being adapted to lower said extension and thereby the said lower plate upon turning of said shaft from the higher position in which said extension is restingv in the circular portion of said shaft to the lower position in which said extension is resting on the iiat portion of said shaft.

CLARENCE A. TILESTON.

REFERENCES CITED The following references are of record 1n the ille of this patent:

UNITED STATES PATENTS 

